// »õâ¶ç¿ì±â
function na_open_window(name, url, left, top, width, height, toolbar, menubar, statusbar, scrollbar, resizable)
{
  toolbar_str = toolbar ? 'yes' : 'no';
  menubar_str = menubar ? 'yes' : 'no';
  statusbar_str = statusbar ? 'yes' : 'no';
  scrollbar_str = scrollbar ? 'yes' : 'no';
  resizable_str = resizable ? 'yes' : 'no';
  window.open(url, name, 'left='+left+',top='+top+',width='+width+',height='+height+',toolbar='+toolbar_str+',menubar='+menubar_str+',status='+statusbar_str+',scrollbars='+scrollbar_str+',resizable='+resizable_str);
}
// onFocus="this.blur()" ÀÚµ¿ Àû¿ë
function bluring(){ 
if(event.srcElement.tagName=="A"||event.srcElement.tagName=="IMG") document.body.focus(); 
} 
document.onfocusin=bluring;

// ÀÚ¹Ù½ºÅ©¸³Æ® ¿À·ù¾ø¾Ö±â
function blockError(){return true;}
window.onerror = blockError;
show&hide

function layer_toggle(obj) {
        if (obj.style.display == 'none') obj.style.display = 'block';
        else if (obj.style.display == 'block') obj.style.display = 'none';
}